ELECTRIC POTENTIAL

work

When a force (F) acts on a particle, ________ is done on the particle in moving from point A to point B.

True

True or False?

If the force is conservative, then the work done can be expressed in terms of a change in potential energy.

False (force MUST BE conservative)

True or False?

If the force acting on a particle is not conservative, then the total energy of the particle remains constant.

Electric potential energy (∆U)

It is the energy a charged object possesses due to its position in an electric field.

Electric potential energy (∆U)

It is the energy required to move an electric charge from one point to another within the field.

decreases

Electric potential energy ___________ if the positive charge moves on the direction of the electric field. (increases or decreases)

increases

Electric potential energy ___________ if the negative charge moves on the opposite direction of the electric field. (increases or decreases)

Electric potential (V)

It is the electric potential energy per unit charge at any point in an electric field.

scalar

Is electric potential a scalar or vector quantity?

volt

What is the unit of electric potential?

Alessandro Volta

To whom was the unit "volt" named after?

Potential difference

It is the work done by the electric force in moving a positive test charge from point A to point B.

Potential difference

It is determined by subtracting the potential at point A from the potential at point B.

zero

The electric potential at infinity is taken as _______.

Equipotential surface

It is the surface which is the locus of all points which are at the same potential.

False (work is NOT required)

True or False?

Work is required to move a charge from one point to another on the equipotential surface.

Equipotential surface

It is any surface with the same electric potential at every point.

zero

The work done in moving a charge between two points in an equipotential surface is ______.

True

True or False?

The electric field is always perpendicular to an equipotential surface.

False (they can NEVER intersect)

True or False?

Two equipotential surfaces can intersect.

True

True or False?

For a point charge, the equipotential surfaces are concentric spherical shells.

x

For a uniform electric field, the equipotential surfaces are planes normal to the ?-axis. (x or y)

high to low

The direction of the equipotential surface is from ______ potential to ______ potential. (high to low or low to high)

constant

Inside a hollow charged spherical conductor, the potential is _______.

Equipotential volume

The region inside a hollow charged spherical conductor is considered as _______________. (two words)

True

True or False?

For an isolated point charge, the equipotential surface is a sphere.

True

True or False?

In a uniform electric field, any plane normal to the field direction is an equipotential surface.

spacing

The ____________ between equipotential surfaces enables us to identify regions of a strong and weak field.